Research and Application of Concentric Cable less Splitting Injection Technology in Offshore Oilfield
In order to save operating costs and improve the efficiency and accuracy of the concentric edge measurement and adjustment process allocation,a proposal has been made for a concentric cable-free injection process.This process aims to accelerate the intelligent process of offshore oilfield water injection wells while also saving platform operating space.The proposed process does not require the replacement of pipe columns.A cable-free tool for intelligent measurement and adjustment is inserted into the concentric edge measurement and adjustment work cylinder.Real-time monitoring of underground data and adjustment of injection water volume is achieved through wireless communication technology,enabling bidirectional communication.The conversion of measuring while adjusting the string to an intelligent string has been achieved through fixed string operation.The wireline operation enables the replacement of the cableless intelligent tuning instrument while retaining the original cable tuning method.This technology has been successfully applied on-site in Well N5 of Bohai B Oilfield,with a total well allocation error of no more than 5％.The results are promising and provide a new technological option for the intelligent transformation of water injection wells in offshore oilfields.
concentric cable free injectionstratified water injectionbidirectional communicationintelligent pipe column
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